Fig. 1From: Pharmacological activity and quantitative analysis of flavonoids isolated from the flowers of Begonia semperflorens Link et OttoInhibitory activity of 1 and 2 on NO generation in RAW 264.7 induced by LPS. The cells were pretreated for 12 h with the indicated concentrations of compounds and stimulated for 18 h with LPS (1 µg/mL). The error bars represent the mean ± SD of three independent experiments. *p < 0.05 compared to the LPS-treated control group. Positive control, buteinBack to article page